Revision 82
dont need to send READ_DATA command every time i want to read a byte; one READ_DATA is enough for 3 bytes (a full packet)
| lab4/mouse.c | ||
|---|---|---|
| 62 | 62 |
int mouse_poll(struct packet *pp, uint16_t period){
|
| 63 | 63 |
int ret = 0; |
| 64 | 64 |
|
| 65 |
int counter = 0; |
|
| 66 | 65 |
uint8_t packet[3]; |
| 67 | 66 |
uint8_t byte; |
| 68 |
while(counter < 3){
|
|
| 69 |
if((ret = mouse_read_data(&byte, period))) return ret; |
|
| 70 |
if((byte & FIRST_BYTE_ID) || counter){
|
|
| 71 |
packet[counter] = byte; |
|
| 72 |
counter++; |
|
| 73 |
} |
|
| 67 |
if ((ret = mouse_issue_cmd(READ_DATA))) return ret; |
|
| 68 |
for(unsigned i = 0; i < 3; ++i){
|
|
| 69 |
if((ret = mouse_poll_byte(&byte, period))) return ret; |
|
| 70 |
packet[i] = byte; |
|
| 74 | 71 |
} |
| 75 | 72 |
*pp = mouse_parse_packet(packet); |
| 76 | 73 |
return SUCCESS; |
| ... | ... | |
| 138 | 135 |
uint8_t stat; |
| 139 | 136 |
while(true){
|
| 140 | 137 |
if((ret = util_sys_inb(STATUS_REG, &stat))) return ret; |
| 141 |
//printf("%x\n",stat);
|
|
| 142 | 138 |
if((stat&OUT_BUF_FUL) && (stat&AUX_MOUSE)) {
|
| 143 | 139 |
if(stat & (PARITY_ERROR | TIME_OUT_REC)) return OTHER_ERROR; |
| 144 | 140 |
if((ret = util_sys_inb(OUTPUT_BUF, byte))) return ret; |
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